POLYSTICHUM AXGULARE. 



Ill 



Trapezoideum, its distinctive feature being in the pinnules, 

 whose upper surface is convex from the edges, being constantly 

 reflexed. An illustration is not needed. 



Fig. 83. 



Irregulare, Moore. (Fig 83.) — This variety was found near 

 Nettlecombe, in Somersetshire, in 1854, by Mr. Ehvorthy; gar- 

 dener to Sir W. C. Trevelyan, Bart. A most curious form, 

 having on the lower pinnae unequally, inciso-lobate, and varying 

 pinnules, of which the basal anterior lobe (aui'icle) is considerably 

 increased in size, and widely detached from the others, the 

 remainder forming lacerate serratures, all the larger of which 

 are again serrated. The upper pinnse are fertile, and somewhat 

 depauperated, being very irregular in size, outline, and toothing. 

 For fronds I am indebted to Mr. R. Sim, of Foot's Cray, Kent. 



